Kongsberg Simrad MF90, Installation Manual

Page: 200 / 426

198
476671/B
Requirements Results
The welds and mechanical brackets that support the gantry are strong enough
to hold the hull unit securely in place under all operating conditions. The
welds and brackets have been painted with the correct preservation medium
to prevent corrosion.
There are no corrosive attacks.
Date and signature:
Related topics
Setting to work, page 186
Inspecting the installation of the MF90 system, page 189
Checking the environmental conditions in the sonar room
It is important that the sonar room is kept clean and dry. The system units must not be
exposed to excessive temperatures, moisture or humidity. Such conditions can cause
corrosive attacks and subsequent failures to the electronic circuitry.
Prerequisites
The following specific instruments are required for this task:
• Thermometer
• Hygrometer
Procedure
1 Make sure that the compartment ("sonar room") is clean and dry.
2 Make sure that the ambient temperature in the room meets the environmental
specifications.
a Make sure that the room is provided with ample ventilation to prevent system
units from overheating.
b Write down the type of ventilation system that is installed.
c Make sure that the ambient temperature of the room is monitored.
d Measure the ambient temperature in the room when the MF90 system is turned off.
e Record the value in the result table.
3 Make sure that the relative humidity in the room meets the environmental specifications.
a Measure the relative humidity in the room.
Simrad MF90 Installation Manual